ceil(), ceilf()

round to smallest integral value greater than or equal to x 

Function

SYNOPSIS

#include <math.h>

double ceil(double x)

float ceilf(float x)

DESCRIPTION

The ceil() and ceilf() functions return the smallest integral value greater than or equal to x.

The ceilf() function is a single-precision version of ceil().

RETURN VALUES

ceil() returns the rounded up value based on x.

If x is NaN, NaN is returned. If the return value would overflow, HUGE_VAL is returned.

CONFORMANCE

ceil(): ANSI/ISO 9899-1990

ceilf(): PTC MKS Toolkit UNIX APIs extension

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

None.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
abs(), fabs(), floor(), ieee(), math(), rint()

PTC MKS Toolkit 10.5 Documentation Build 40.